K. Saito et al., PHOTOISOMERIZATION REACTIONS OF 8-AZATRICYCLO[3.2.1.02,4]OCT-6-ENE DERIVATIVES LEADING TO AZABISHOMOBENZENE DERIVATIVES, Chemistry Letters, (5), 1993, pp. 757-760
Irradiation of 8-azatricyclo[3.2.1.0(2,4)]oct-6-enes in dry ether with
a low pressure mercury lamp gave azabishomobenzenes. through [2pi+2si
gma]-type migration reactions between C-N bonds and olefin moieties.